Colonoscopy is an examination of the lower part of the intestinal tract, also called the colon or large intestine (bowel). Read more here.

ERCP (Endoscopic Retrograde Cholangiopancreatography) is an examination of a part of the gastrointestinal system that includes the gallbladder and pancreas and the ducts (tubes) that drain those organs and the liver. Read more here.

Upper Endoscopy is an examination of the upper part of the gastrointestinal system, which includes the esophagus (swallowing tube), the stomach and the duodenum (first section of the small intestine). Read more here.